Lock



Nov. 29, 1932.

F. W. M FARLAND LOCK Filed April 20, 1951 5 Sheets-Sheet QJLIMWWYggENTOR.

BY Q Nov. 29, 1932.

F. w. MCFARLAND LOCK Filed April 20, 1931 3 Sheets-Sheet Nov. 29, 1932.

F. w. MCFARLAND 1,889,210

LOCK

Filed April20, 1951 s Sheets-Sheet s IIIIIIIIII ATTORNEYS.

Patented Nov. 29, 1932 UNITED STATES PATENT OFFICE FRANCIS WALTERMcFAR-LAND, OF MARTINEZ, CALIFORNIA, ASSIGNOR OF TWO THIRTY-SECONDS TBYRON DECKER AND FIFTEEN THIRTY-SECONDS TO RALYH HERSEY, BOTH OFMARTINEZ, CALIFORNIA LOCK Application filed. April 20,

This invention is a lock, and has special reference to a lock forfreight car doors, although adapted for any type of door, swinging,sliding or lifting, and is also applicable to use on inner compartmentsof safes, and is peculiarly adapted for use where it is desired toidentify the operators of the lock, which provides an accurate registerof all operators 0f the lock and the order of operation, as also-control incorporating a key, a slug and a slide, and in which the slidemust first be unlocked by the key, a slug inserted, and the lockreleased by the same key by cooperation with the slug.

Third, to provide a look as outlined with a counting device to provide acheck on the operation of the lock.

Fourth, to provide a separately locked receptacle for the slugs and sodisposed and formed as to receive and retain the slugs in the order inwhich they are deposited.

Other objects and advantages of the invention will become apparentiasthe following description is read on the drawings forming a part of thisspecification and in which similar reference characters are used todesignate similar parts throughout the several views, and in which:

Fig. 1 is a front elevation of the invention, showing the twocooperating lock elements in locked position;

Fig. 2 is a bottom vlew ofthe invention;

Fig. 3 is a perspective view of the key used for operating the lock; v

Fig. 4 is a plan view showing the interior mechanism in locked position:

Fig. 5 is a section taken on line 5-5 of Fig 4;

Fig. 6 is a perspective view of the slug.

Fig. 7 is a plan view showing the interior mechanism in unlockedposition;

1931. Serial 1%. 531,410.

Fig. 8 is a bottom view of Fig. 7 and Fig. 9 is a section taken on line99 of Fig. 7.

The lock consists of a lock element and a latch element, one of theelements to be mounted on the door and the other element on thecooperating door or casing.

The lock element consists of a housing of inverted bottle shape havingbody sides 10 and 11 and ends 12 and 13, the end 13 being formed with aneck 14 provided with outwardly projecting flanges 15. The bottom 16is'secured by any known means, and may be integral with the sides andends and oonsists of a flat plate formed to the contour of the housing.The lock mechanism is mounted on an intermediate plate 17, the loweredge 18 of which is spaced from the wall 13, and is fixed to or integralwith sides 10 and 11 and end 12. Holes 19 are provided for mountingbolts and tapped holes 20 for fastening the cover in place.

A bore 21 is formed in the end of the neck 14 to receive a lock 22 ofthe Yale type, V

which is provided with pins 23 adapted to engage in recesses or a groove24 formed in the neck. A slot 25 slidably receives the slug slide,'and aslot 26 is adapted to clear the swing of the latch. The cover 27 is ofsimilar form to the bottom 16 and is provided with a slug opening 27, akey hole 28, mounting bolt holes 29 in registry with holes 19 in thebottom, a sight opening 30 for the counter and another opening 31 forthe last operated slug. The key hole 28 is provided with a springcentered cover 32 pivoted at 33, and the opening 31 is provided with amagnifying glass 34 suitably mounted in a frame 35; gib 36 cooperateswiththe slug slide.

The latch housing consists of a substantially rectangular casing 37having a bottom 38, a slot 39 being formed in one side to clear theswing of the latch, and a recess extending 1 The cover is provided withmounting holes 46 in registry with holes 42 in the bottom, and thecovers are suitably fastened by means of screws 47. An arcuate slot 48clears the swing of the operating knob on the latch arm, and the coveris so formed as to cover the latch arm throughout its swing.

The slug 49 consists of a disk of metal or hard composition and providedwith a groove 50 formed ofi' center so the slugs can only be insertedone way, and have identifying marks and serial numbers as indicated at51 on the face opposite groove 50.

The slug inserting device consists of a slide portion 52, integral witha body 53 and a superposed spaced cover 54. A ridge 55 cooperates withthe groove 50 in the slug, and a pin 56 prevents the slug from beingmisplaced at time of insertion. 57 is slidable under a gib 58 andprevents withdrawal of the slide. A knob 59 provides for convenientoperation of the slide. A locking groove 60 is formed in the bottom edgeof the body portion 53.

The slug slide locking device consists of a leaf spring 61 pivoted at62, the pivot being adjustable toward or away from the slug slide bymeans of the adjustable block 63. A pin 64 cooperates with the upperportion of the spring, the end of which engages in the slot 60 slide 54.

The slug chute 65 has a ridge 66 in alignment with the ridge 55 when theslide 54 is closed and a recess at the bottom for reception of thecounter arm. Blocks 67, 68 and 69 function as additional guides for theslugs 49. A block 70 has a transverse slot 71 in which a retentionspring is adapted to retract on passage of a slug and which consists ofa length of spring wire 7 2 secured in the housing at one end, the otherend being bent upwardly to present a broader surface to the slug.

A key pivot 73 is adapted to cooperate with the aperture 74 in key 75,the key being stepped at 76 to clear the ridge 66.

The pawl 77 is pivoted at 78 and has teeth 79 adapted to engage thelatch, and is urged by a spring 80 into the path of the slugs, and isarcuately formed at 81 to cooperate with the periphery of the slug 51.

A roller 82 is adapted to cooperate with the back of the latch member. Aratchet type counter 83 is operated through a lever and link system 84in combination with a shaft 85 which is mounted in bearings 86 and hasan upwardly extending arm 87 adapted to be engaged by the slugs as theyare forced past the spring 72 and into the cup 88 in which the slugs aredeposited and which is removable by unlocking the lock 22 andwithdrawing the cup with the lock.

The latch consists of an arcuately formed preventing withdrawal of thetoothed member 89 adapted to cooperate with A tongue the teeth 79 onpawl 77, the inner side 90 cooperating with the roller 82 as shown inFig. 4 and being pivoted at 91, having an en gaging arm 92 adapted tocooperate with a spring urged plunger 93 which isslidably mounted inbearings 94 and urged by the spring 95, and also having an operating arm96 provided with a knob 97 which projects through the arcuate slot 48 inthe cover. A

spring pressed ball 98 cooperates with the in ner edge of the latchwhereby thelatch is retained in the position shown in Fig. 7.

The cover 45 is provided with a cleat 99 which is adapted to cover thecrack between the two elements when closed together.

The operation of the device is as follows: The lock element and latchelement are mounted on two cooperating door members by through carriagebolts, the square under the head fitting into the rectangular apertures29 whichwill prevent removal of the bolts from the outside.

To look, it is only necessary to swing the latch arm 96 from theposition shown in Fig. 7 to that shown in Figs. 1 and 4, whereby theratchet section of latch 89 engages the teeth on pawl 77 which assumesthe position shown in Fig. 4, and being urged by the spring 80.

To unlock the device, it is first necessary to insert the key Fig. 3 inthe key hole 28, turn the key contraeclockwise whereby the key depressesspring 61 between the pivot 62 and pin 64 which causes retraction of theend of the spring from the slot 60, releasing the slide 54 which is thendrawn to the left by means of knob 59, exposing the opening 27; throughwhich a slug 49 is inserted the groove 50 fitting over ridge 55, and pin56 preventing the placing of the slug in the wrong position. The key isreleased and the slide pushed back to its original position, beingautomatically locked by cooperation of the end of spring 61 with thegroove 60, the slide also preventing dust, cinders from entering thelock or preventing tampering and insertion of tramp material or slugs.As the slide is pushed back and ridge 55 reaches alignment with ridge66, the slug 51 slides down to the position shown in Fig. 4 beingstopped by the arcuate recess 81 in pawl 77. By turning key 76 clockwisethe slug 51 is forced down, coincidently forcing pawl 77 back as shownin Fig. 7, releasing the latch 89. Spring plunger 93 urging against theprojection 92, throws the latch about its pivot 91 to the position shownin Fig. 7 and is engaged and retained in this position by the springpressed ball 98. As the slug 49 is forced past the end of the pawl 77,the pawl returns to the position shown in Fig. 4 and the slug is stoppedby the upturned end 100 of spring 72 and retained until the next openingof the lock. and causes the next inserted slug 49a to force the previousslug 49 past the end 100 of spring 72 which is forced into the recess 71thereby, slug 4 engaging the lever arm 87, forcing it downwardly, whichthrough the shaft and link and lever system 84 operates the counter 83,increasing by one number as indicated by Fig. 4 and Fig. 7. Slug 49drops into the receptacle 88 and arm 87 returns to the position shown inFig. 4, being resiliently urged, the slug 49a occupying the positionlast held by slug 49. The receptacle 88 is removed only by autho 'izedpersons who have a special key to fit the lock 22, which is removed withthe receptacle 88 from the lower end of the housing, the slugs beingdeposited in order. The last slug used for opening the lock is visiblethrough the opening 31, the glass 34 enlarging the view of thecharacters so as to make them plainly readable, thereby providing anindividual check on who last opened the lock.

Having described an operable method of constructing and using theinvention, it will be noted that variations in construction andarrangement of parts which are consistent with the appended claims maybe resorted to without detracting from the spirit or scope of theinvention or sacrificing any of the advantages thereof.

I claim 1. A look, in combination, a latch housing, an arcuate latchpivotally mounted therein and having an integral operating arm, andratchet teeth formed in the outer periphery, a lock housing having anopening for reception of said latch, a pawl pivotally mounted thereinand adapted to cooperate with said latch, a slug guide in cooperativerelation to said pawl, said pawl having means to support a. slug, andsaid lock housing having an aperture for the insertion of a key wherebyan inserted key may engage a slug supported by said pawl to release saidpawl from said latch.

2. In combination with a combined key and slug operated look; a slugslot, and a cover therefor, means for automatically locking said coverin closed position, said means being releasable by a key used foroperation of said lock.

3. In combination with a combined key and slug operated lock having anaperture for the insertion of a key, a slug slot, a cover for said slot,a guide integral with said cover and having slug positioning andretaining means thereon, means for automatically locking said cover inclosed position, said means being releasable by a key.

4. In combination with a combined key and slug operated lock having slugguiding and key positioning means; a slug inserting device comprising aslide, slug positioning means on said slide, a cover integral with saidslide, a groove in one edge of said slide, a retractible spring incooperative relation to said key positioning means and adapted tocooperate with said groove for locking said slide'in closed position,said "cover being adapted toclose a slug slot, said slug positioningmeans on said slide being. in alignment. with said slug guiding meanswhen said slide is in closed position.

5. A look, in combination, a lock housing provided with a key receivingaperture, a latch housing, a pivoted latch insaid latch housing andhaving an arcuate arm adapted to enter an opening in said lock housingand to cooperate with locking means therein, an operating arm on saidlatch, a pawl in said lock housing adapted to engage said latch, a slugguide in operative relation to said pawl, adapted to guide a slug forrelease of said pawl by cooperative action with a key, a resilientmember for retaining a slug following release of said pawl, aregistering device, means interposed in the path of travel of a releasedslug for operating said registering device, a slug slot, a cover forsaid slot integral with a slide, a guide on said slide adapted toregister with said slug guide, resiliently actuated locking means forsaid guide, releasable by a key inserted in said key receiving aperture.

6. A look, in combination with a latch and combined key and slugreleasable engaging means therefor, a slug inserting device andautomatic locking means therefor, a slug guide in cooperative relationto said engaging means, key positioning means in cooperative relation tosaid inserting device locking means, and to said slug guide, a sightaperture in registry with said slug guide, resilient slug retainingmeans in cooperative relation with said guide, a registering device, andslug operated means in cooperative relation to said slug guide foroperating said registering device, a sight aperture for said registeringdevice, and an individually locked slug receptacle adapted to receivethe slugs following operation of said registering device.

7. In combination with a combined key and slug operated lock, having aslug guide in cooperative relation to a releasing member, keypositioning means in cooperative relation to said guide; a sluginserting device comprising a slide disposed beneath a slug receivingaperture, a cover integral therewith and adapted to close said aperture,slug positioning means on said slide adapted to register with said slugguide when in closed position, and automatic means in cooperativerelation to said key positioning means for locking said slide in closedposition.

8. A look, in combination, a lock element and a latch element, aresiliently retracted latch member pivotally mounted in said latchelement and provided with peripheral ratchet teeth and adapted toswingably enter said lock element, a pawl pivotally mounted in said lockelement and adapted to cooperate with said latch member, slug guidingmeans in cooperative relation to said pawl, an operating arm on saidlatch member for manually locking said latch member in engagement withsaid pawl, said pawl being releasable by means of a key cooperating witha slug retained by said pawl.

In testimony whereof Ihave aflixed my signature.

FRANCIS WALTER McFARLAND.

